12240354512345 has 8 divisors (see below), whose sum is σ = 14688444192576. Its totient is φ = 9792271091376.

The previous prime is 12240354512341. The next prime is 12240354512383. The reversal of 12240354512345 is 54321545304221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12240354512345 - 2² = 12240354512341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12240354512341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6910484 + ... + 8499146.

It is an arithmetic number, because the mean of its divisors is an integer number (1836055524072).

Almost surely, 2^{12240354512345} is an apocalyptic number.

It is an amenable number.

12240354512345 is a deficient number, since it is larger than the sum of its proper divisors (2448089680231).

12240354512345 is a wasteful number, since it uses less digits than its factorization.

12240354512345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129631.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 12240354512345 its reverse (54321545304221), we get a palindrome (66561899816566).

The spelling of 12240354512345 in words is "twelve trillion, two hundred forty billion, three hundred fifty-four million, five hundred twelve thousand, three hundred forty-five".